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5217 | serge | 1 | /* stabs.c -- Parse COFF debugging information |
2 | Copyright 1996, 1999, 2000, 2002, 2003, 2005, 2007 |
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3 | Free Software Foundation, Inc. |
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4 | Written by Ian Lance Taylor |
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5 | |||
6 | This file is part of GNU Binutils. |
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7 | |||
8 | This program is free software; you can redistribute it and/or modify |
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9 | it under the terms of the GNU General Public License as published by |
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10 | the Free Software Foundation; either version 3 of the License, or |
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11 | (at your option) any later version. |
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12 | |||
13 | This program is distributed in the hope that it will be useful, |
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14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | GNU General Public License for more details. |
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17 | |||
18 | You should have received a copy of the GNU General Public License |
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19 | along with this program; if not, write to the Free Software |
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20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
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21 | 02110-1301, USA. */ |
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22 | |||
23 | /* This file contains code which parses COFF debugging information. */ |
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24 | |||
25 | #include "sysdep.h" |
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26 | #include "bfd.h" |
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27 | #include "coff/internal.h" |
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28 | #include "libiberty.h" |
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29 | #include "bucomm.h" |
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30 | #include "debug.h" |
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31 | #include "budbg.h" |
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32 | |||
33 | /* FIXME: We should not need this BFD internal file. We need it for |
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34 | the N_BTMASK, etc., values. */ |
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35 | #include "libcoff.h" |
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36 | |||
37 | /* These macros extract the right mask and shifts for this BFD. They |
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38 | assume that there is a local variable named ABFD. This is so that |
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39 | macros like ISFCN and DECREF, from coff/internal.h, will work |
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40 | without modification. */ |
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41 | #define N_BTMASK (coff_data (abfd)->local_n_btmask) |
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42 | #define N_BTSHFT (coff_data (abfd)->local_n_btshft) |
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43 | #define N_TMASK (coff_data (abfd)->local_n_tmask) |
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44 | #define N_TSHIFT (coff_data (abfd)->local_n_tshift) |
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45 | |||
46 | /* This structure is used to hold the symbols, as well as the current |
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47 | location within the symbols. */ |
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48 | |||
49 | struct coff_symbols |
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50 | { |
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51 | /* The symbols. */ |
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52 | asymbol **syms; |
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53 | /* The number of symbols. */ |
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54 | long symcount; |
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55 | /* The index of the current symbol. */ |
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56 | long symno; |
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57 | /* The index of the current symbol in the COFF symbol table (where |
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58 | each auxent counts as a symbol). */ |
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59 | long coff_symno; |
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60 | }; |
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61 | |||
62 | /* The largest basic type we are prepared to handle. */ |
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63 | |||
64 | #define T_MAX (T_LNGDBL) |
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65 | |||
66 | /* This structure is used to hold slots. */ |
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67 | |||
68 | struct coff_slots |
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69 | { |
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70 | /* Next set of slots. */ |
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71 | struct coff_slots *next; |
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72 | /* Slots. */ |
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73 | #define COFF_SLOTS (16) |
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74 | debug_type slots[COFF_SLOTS]; |
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75 | }; |
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76 | |||
77 | /* This structure is used to map symbol indices to types. */ |
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78 | |||
79 | struct coff_types |
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80 | { |
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81 | /* Slots. */ |
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82 | struct coff_slots *slots; |
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83 | /* Basic types. */ |
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84 | debug_type basic[T_MAX + 1]; |
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85 | }; |
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86 | |||
87 | static debug_type *coff_get_slot (struct coff_types *, int); |
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88 | static debug_type parse_coff_type |
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89 | (bfd *, struct coff_symbols *, struct coff_types *, long, int, |
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90 | union internal_auxent *, bfd_boolean, void *); |
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91 | static debug_type parse_coff_base_type |
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92 | (bfd *, struct coff_symbols *, struct coff_types *, long, int, |
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93 | union internal_auxent *, void *); |
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94 | static debug_type parse_coff_struct_type |
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95 | (bfd *, struct coff_symbols *, struct coff_types *, int, |
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96 | union internal_auxent *, void *); |
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97 | static debug_type parse_coff_enum_type |
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98 | (bfd *, struct coff_symbols *, struct coff_types *, |
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99 | union internal_auxent *, void *); |
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100 | static bfd_boolean parse_coff_symbol |
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101 | (bfd *, struct coff_types *, asymbol *, long, struct internal_syment *, |
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102 | void *, debug_type, bfd_boolean); |
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103 | static bfd_boolean external_coff_symbol_p (int sym_class); |
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104 | |||
105 | /* Return the slot for a type. */ |
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106 | |||
107 | static debug_type * |
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108 | coff_get_slot (struct coff_types *types, int indx) |
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109 | { |
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110 | struct coff_slots **pps; |
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111 | |||
112 | pps = &types->slots; |
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113 | |||
114 | while (indx >= COFF_SLOTS) |
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115 | { |
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116 | if (*pps == NULL) |
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117 | { |
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118 | *pps = (struct coff_slots *) xmalloc (sizeof **pps); |
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119 | memset (*pps, 0, sizeof **pps); |
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120 | } |
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121 | pps = &(*pps)->next; |
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122 | indx -= COFF_SLOTS; |
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123 | } |
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124 | |||
125 | if (*pps == NULL) |
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126 | { |
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127 | *pps = (struct coff_slots *) xmalloc (sizeof **pps); |
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128 | memset (*pps, 0, sizeof **pps); |
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129 | } |
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130 | |||
131 | return (*pps)->slots + indx; |
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132 | } |
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133 | |||
134 | /* Parse a COFF type code in NTYPE. */ |
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135 | |||
136 | static debug_type |
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137 | parse_coff_type (bfd *abfd, struct coff_symbols *symbols, |
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138 | struct coff_types *types, long coff_symno, int ntype, |
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139 | union internal_auxent *pauxent, bfd_boolean useaux, |
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140 | void *dhandle) |
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141 | { |
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142 | debug_type type; |
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143 | |||
144 | if ((ntype & ~N_BTMASK) != 0) |
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145 | { |
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146 | int newtype; |
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147 | |||
148 | newtype = DECREF (ntype); |
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149 | |||
150 | if (ISPTR (ntype)) |
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151 | { |
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152 | type = parse_coff_type (abfd, symbols, types, coff_symno, newtype, |
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153 | pauxent, useaux, dhandle); |
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154 | type = debug_make_pointer_type (dhandle, type); |
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155 | } |
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156 | else if (ISFCN (ntype)) |
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157 | { |
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158 | type = parse_coff_type (abfd, symbols, types, coff_symno, newtype, |
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159 | pauxent, useaux, dhandle); |
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160 | type = debug_make_function_type (dhandle, type, (debug_type *) NULL, |
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161 | FALSE); |
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162 | } |
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163 | else if (ISARY (ntype)) |
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164 | { |
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165 | int n; |
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166 | |||
167 | if (pauxent == NULL) |
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168 | n = 0; |
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169 | else |
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170 | { |
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171 | unsigned short *dim; |
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172 | int i; |
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173 | |||
174 | /* FIXME: If pauxent->x_sym.x_tagndx.l == 0, gdb sets |
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175 | the c_naux field of the syment to 0. */ |
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176 | |||
177 | /* Move the dimensions down, so that the next array |
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178 | picks up the next one. */ |
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179 | dim = pauxent->x_sym.x_fcnary.x_ary.x_dimen; |
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180 | n = dim[0]; |
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181 | for (i = 0; *dim != 0 && i < DIMNUM - 1; i++, dim++) |
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182 | *dim = *(dim + 1); |
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183 | *dim = 0; |
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184 | } |
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185 | |||
186 | type = parse_coff_type (abfd, symbols, types, coff_symno, newtype, |
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187 | pauxent, FALSE, dhandle); |
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188 | type = debug_make_array_type (dhandle, type, |
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189 | parse_coff_base_type (abfd, symbols, |
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190 | types, |
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191 | coff_symno, |
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192 | T_INT, |
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193 | NULL, dhandle), |
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194 | 0, n - 1, FALSE); |
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195 | } |
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196 | else |
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197 | { |
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198 | non_fatal (_("parse_coff_type: Bad type code 0x%x"), ntype); |
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199 | return DEBUG_TYPE_NULL; |
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200 | } |
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201 | |||
202 | return type; |
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203 | } |
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204 | |||
205 | if (pauxent != NULL && pauxent->x_sym.x_tagndx.l > 0) |
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206 | { |
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207 | debug_type *slot; |
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208 | |||
209 | /* This is a reference to an existing type. FIXME: gdb checks |
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210 | that the class is not C_STRTAG, nor C_UNTAG, nor C_ENTAG. */ |
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211 | slot = coff_get_slot (types, pauxent->x_sym.x_tagndx.l); |
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212 | if (*slot != DEBUG_TYPE_NULL) |
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213 | return *slot; |
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214 | else |
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215 | return debug_make_indirect_type (dhandle, slot, (const char *) NULL); |
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216 | } |
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217 | |||
218 | /* If the aux entry has already been used for something, useaux will |
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219 | have been set to false, indicating that parse_coff_base_type |
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220 | should not use it. We need to do it this way, rather than simply |
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221 | passing pauxent as NULL, because we need to be able handle |
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222 | multiple array dimensions while still discarding pauxent after |
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223 | having handled all of them. */ |
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224 | if (! useaux) |
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225 | pauxent = NULL; |
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226 | |||
227 | return parse_coff_base_type (abfd, symbols, types, coff_symno, ntype, |
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228 | pauxent, dhandle); |
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229 | } |
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230 | |||
231 | /* Parse a basic COFF type in NTYPE. */ |
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232 | |||
233 | static debug_type |
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234 | parse_coff_base_type (bfd *abfd, struct coff_symbols *symbols, |
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235 | struct coff_types *types, long coff_symno, int ntype, |
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236 | union internal_auxent *pauxent, void *dhandle) |
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237 | { |
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238 | debug_type ret; |
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239 | bfd_boolean set_basic; |
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240 | const char *name; |
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241 | debug_type *slot; |
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242 | |||
243 | if (ntype >= 0 |
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244 | && ntype <= T_MAX |
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245 | && types->basic[ntype] != DEBUG_TYPE_NULL) |
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246 | return types->basic[ntype]; |
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247 | |||
248 | set_basic = TRUE; |
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249 | name = NULL; |
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250 | |||
251 | switch (ntype) |
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252 | { |
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253 | default: |
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254 | ret = debug_make_void_type (dhandle); |
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255 | break; |
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256 | |||
257 | case T_NULL: |
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258 | case T_VOID: |
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259 | ret = debug_make_void_type (dhandle); |
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260 | name = "void"; |
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261 | break; |
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262 | |||
263 | case T_CHAR: |
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264 | ret = debug_make_int_type (dhandle, 1, FALSE); |
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265 | name = "char"; |
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266 | break; |
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267 | |||
268 | case T_SHORT: |
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269 | ret = debug_make_int_type (dhandle, 2, FALSE); |
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270 | name = "short"; |
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271 | break; |
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272 | |||
273 | case T_INT: |
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274 | /* FIXME: Perhaps the size should depend upon the architecture. */ |
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275 | ret = debug_make_int_type (dhandle, 4, FALSE); |
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276 | name = "int"; |
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277 | break; |
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278 | |||
279 | case T_LONG: |
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280 | ret = debug_make_int_type (dhandle, 4, FALSE); |
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281 | name = "long"; |
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282 | break; |
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283 | |||
284 | case T_FLOAT: |
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285 | ret = debug_make_float_type (dhandle, 4); |
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286 | name = "float"; |
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287 | break; |
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288 | |||
289 | case T_DOUBLE: |
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290 | ret = debug_make_float_type (dhandle, 8); |
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291 | name = "double"; |
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292 | break; |
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293 | |||
294 | case T_LNGDBL: |
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295 | ret = debug_make_float_type (dhandle, 12); |
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296 | name = "long double"; |
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297 | break; |
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298 | |||
299 | case T_UCHAR: |
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300 | ret = debug_make_int_type (dhandle, 1, TRUE); |
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301 | name = "unsigned char"; |
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302 | break; |
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303 | |||
304 | case T_USHORT: |
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305 | ret = debug_make_int_type (dhandle, 2, TRUE); |
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306 | name = "unsigned short"; |
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307 | break; |
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308 | |||
309 | case T_UINT: |
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310 | ret = debug_make_int_type (dhandle, 4, TRUE); |
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311 | name = "unsigned int"; |
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312 | break; |
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313 | |||
314 | case T_ULONG: |
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315 | ret = debug_make_int_type (dhandle, 4, TRUE); |
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316 | name = "unsigned long"; |
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317 | break; |
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318 | |||
319 | case T_STRUCT: |
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320 | if (pauxent == NULL) |
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321 | ret = debug_make_struct_type (dhandle, TRUE, 0, |
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322 | (debug_field *) NULL); |
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323 | else |
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324 | ret = parse_coff_struct_type (abfd, symbols, types, ntype, pauxent, |
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325 | dhandle); |
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326 | |||
327 | slot = coff_get_slot (types, coff_symno); |
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328 | *slot = ret; |
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329 | |||
330 | set_basic = FALSE; |
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331 | break; |
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332 | |||
333 | case T_UNION: |
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334 | if (pauxent == NULL) |
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335 | ret = debug_make_struct_type (dhandle, FALSE, 0, (debug_field *) NULL); |
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336 | else |
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337 | ret = parse_coff_struct_type (abfd, symbols, types, ntype, pauxent, |
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338 | dhandle); |
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339 | |||
340 | slot = coff_get_slot (types, coff_symno); |
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341 | *slot = ret; |
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342 | |||
343 | set_basic = FALSE; |
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344 | break; |
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345 | |||
346 | case T_ENUM: |
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347 | if (pauxent == NULL) |
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348 | ret = debug_make_enum_type (dhandle, (const char **) NULL, |
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349 | (bfd_signed_vma *) NULL); |
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350 | else |
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351 | ret = parse_coff_enum_type (abfd, symbols, types, pauxent, dhandle); |
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352 | |||
353 | slot = coff_get_slot (types, coff_symno); |
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354 | *slot = ret; |
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355 | |||
356 | set_basic = FALSE; |
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357 | break; |
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358 | } |
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359 | |||
360 | if (name != NULL) |
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361 | ret = debug_name_type (dhandle, name, ret); |
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362 | |||
363 | if (set_basic |
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364 | && ntype >= 0 |
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365 | && ntype <= T_MAX) |
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366 | types->basic[ntype] = ret; |
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367 | |||
368 | return ret; |
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369 | } |
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370 | |||
371 | /* Parse a struct type. */ |
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372 | |||
373 | static debug_type |
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374 | parse_coff_struct_type (bfd *abfd, struct coff_symbols *symbols, |
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375 | struct coff_types *types, int ntype, |
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376 | union internal_auxent *pauxent, void *dhandle) |
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377 | { |
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378 | long symend; |
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379 | int alloc; |
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380 | debug_field *fields; |
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381 | int count; |
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382 | bfd_boolean done; |
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383 | |||
384 | symend = pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l; |
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385 | |||
386 | alloc = 10; |
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387 | fields = (debug_field *) xmalloc (alloc * sizeof *fields); |
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388 | count = 0; |
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389 | |||
390 | done = FALSE; |
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391 | while (! done |
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392 | && symbols->coff_symno < symend |
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393 | && symbols->symno < symbols->symcount) |
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394 | { |
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395 | asymbol *sym; |
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396 | long this_coff_symno; |
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397 | struct internal_syment syment; |
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398 | union internal_auxent auxent; |
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399 | union internal_auxent *psubaux; |
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400 | bfd_vma bitpos = 0, bitsize = 0; |
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401 | |||
402 | sym = symbols->syms[symbols->symno]; |
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403 | |||
404 | if (! bfd_coff_get_syment (abfd, sym, &syment)) |
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405 | { |
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406 | non_fatal (_("bfd_coff_get_syment failed: %s"), |
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407 | bfd_errmsg (bfd_get_error ())); |
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408 | return DEBUG_TYPE_NULL; |
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409 | } |
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410 | |||
411 | this_coff_symno = symbols->coff_symno; |
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412 | |||
413 | ++symbols->symno; |
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414 | symbols->coff_symno += 1 + syment.n_numaux; |
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415 | |||
416 | if (syment.n_numaux == 0) |
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417 | psubaux = NULL; |
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418 | else |
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419 | { |
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420 | if (! bfd_coff_get_auxent (abfd, sym, 0, &auxent)) |
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421 | { |
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422 | non_fatal (_("bfd_coff_get_auxent failed: %s"), |
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423 | bfd_errmsg (bfd_get_error ())); |
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424 | return DEBUG_TYPE_NULL; |
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425 | } |
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426 | psubaux = &auxent; |
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427 | } |
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428 | |||
429 | switch (syment.n_sclass) |
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430 | { |
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431 | case C_MOS: |
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432 | case C_MOU: |
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433 | bitpos = 8 * bfd_asymbol_value (sym); |
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434 | bitsize = 0; |
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435 | break; |
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436 | |||
437 | case C_FIELD: |
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438 | bitpos = bfd_asymbol_value (sym); |
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439 | bitsize = auxent.x_sym.x_misc.x_lnsz.x_size; |
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440 | break; |
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441 | |||
442 | case C_EOS: |
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443 | done = TRUE; |
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444 | break; |
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445 | } |
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446 | |||
447 | if (! done) |
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448 | { |
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449 | debug_type ftype; |
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450 | debug_field f; |
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451 | |||
452 | ftype = parse_coff_type (abfd, symbols, types, this_coff_symno, |
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453 | syment.n_type, psubaux, TRUE, dhandle); |
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454 | f = debug_make_field (dhandle, bfd_asymbol_name (sym), ftype, |
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455 | bitpos, bitsize, DEBUG_VISIBILITY_PUBLIC); |
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456 | if (f == DEBUG_FIELD_NULL) |
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457 | return DEBUG_TYPE_NULL; |
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458 | |||
459 | if (count + 1 >= alloc) |
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460 | { |
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461 | alloc += 10; |
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462 | fields = ((debug_field *) |
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463 | xrealloc (fields, alloc * sizeof *fields)); |
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464 | } |
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465 | |||
466 | fields[count] = f; |
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467 | ++count; |
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468 | } |
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469 | } |
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470 | |||
471 | fields[count] = DEBUG_FIELD_NULL; |
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472 | |||
473 | return debug_make_struct_type (dhandle, ntype == T_STRUCT, |
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474 | pauxent->x_sym.x_misc.x_lnsz.x_size, |
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475 | fields); |
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476 | } |
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477 | |||
478 | /* Parse an enum type. */ |
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479 | |||
480 | static debug_type |
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481 | parse_coff_enum_type (bfd *abfd, struct coff_symbols *symbols, |
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482 | struct coff_types *types ATTRIBUTE_UNUSED, |
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483 | union internal_auxent *pauxent, void *dhandle) |
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484 | { |
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485 | long symend; |
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486 | int alloc; |
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487 | const char **names; |
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488 | bfd_signed_vma *vals; |
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489 | int count; |
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490 | bfd_boolean done; |
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491 | |||
492 | symend = pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l; |
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493 | |||
494 | alloc = 10; |
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495 | names = (const char **) xmalloc (alloc * sizeof *names); |
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496 | vals = (bfd_signed_vma *) xmalloc (alloc * sizeof *vals); |
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497 | count = 0; |
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498 | |||
499 | done = FALSE; |
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500 | while (! done |
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501 | && symbols->coff_symno < symend |
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502 | && symbols->symno < symbols->symcount) |
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503 | { |
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504 | asymbol *sym; |
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505 | struct internal_syment syment; |
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506 | |||
507 | sym = symbols->syms[symbols->symno]; |
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508 | |||
509 | if (! bfd_coff_get_syment (abfd, sym, &syment)) |
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510 | { |
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511 | non_fatal (_("bfd_coff_get_syment failed: %s"), |
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512 | bfd_errmsg (bfd_get_error ())); |
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513 | return DEBUG_TYPE_NULL; |
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514 | } |
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515 | |||
516 | ++symbols->symno; |
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517 | symbols->coff_symno += 1 + syment.n_numaux; |
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518 | |||
519 | switch (syment.n_sclass) |
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520 | { |
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521 | case C_MOE: |
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522 | if (count + 1 >= alloc) |
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523 | { |
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524 | alloc += 10; |
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525 | names = ((const char **) |
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526 | xrealloc (names, alloc * sizeof *names)); |
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527 | vals = ((bfd_signed_vma *) |
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528 | xrealloc (vals, alloc * sizeof *vals)); |
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529 | } |
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530 | |||
531 | names[count] = bfd_asymbol_name (sym); |
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532 | vals[count] = bfd_asymbol_value (sym); |
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533 | ++count; |
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534 | break; |
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535 | |||
536 | case C_EOS: |
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537 | done = TRUE; |
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538 | break; |
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539 | } |
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540 | } |
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541 | |||
542 | names[count] = NULL; |
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543 | |||
544 | return debug_make_enum_type (dhandle, names, vals); |
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545 | } |
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546 | |||
547 | /* Handle a single COFF symbol. */ |
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548 | |||
549 | static bfd_boolean |
||
550 | parse_coff_symbol (bfd *abfd ATTRIBUTE_UNUSED, struct coff_types *types, |
||
551 | asymbol *sym, long coff_symno, |
||
552 | struct internal_syment *psyment, void *dhandle, |
||
553 | debug_type type, bfd_boolean within_function) |
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554 | { |
||
555 | switch (psyment->n_sclass) |
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556 | { |
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557 | case C_NULL: |
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558 | break; |
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559 | |||
560 | case C_AUTO: |
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561 | if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type, |
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562 | DEBUG_LOCAL, bfd_asymbol_value (sym))) |
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563 | return FALSE; |
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564 | break; |
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565 | |||
566 | case C_WEAKEXT: |
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567 | case C_EXT: |
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568 | if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type, |
||
569 | DEBUG_GLOBAL, bfd_asymbol_value (sym))) |
||
570 | return FALSE; |
||
571 | break; |
||
572 | |||
573 | case C_STAT: |
||
574 | if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type, |
||
575 | (within_function |
||
576 | ? DEBUG_LOCAL_STATIC |
||
577 | : DEBUG_STATIC), |
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578 | bfd_asymbol_value (sym))) |
||
579 | return FALSE; |
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580 | break; |
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581 | |||
582 | case C_REG: |
||
583 | /* FIXME: We may need to convert the register number. */ |
||
584 | if (! debug_record_variable (dhandle, bfd_asymbol_name (sym), type, |
||
585 | DEBUG_REGISTER, bfd_asymbol_value (sym))) |
||
586 | return FALSE; |
||
587 | break; |
||
588 | |||
589 | case C_LABEL: |
||
590 | break; |
||
591 | |||
592 | case C_ARG: |
||
593 | if (! debug_record_parameter (dhandle, bfd_asymbol_name (sym), type, |
||
594 | DEBUG_PARM_STACK, bfd_asymbol_value (sym))) |
||
595 | return FALSE; |
||
596 | break; |
||
597 | |||
598 | case C_REGPARM: |
||
599 | /* FIXME: We may need to convert the register number. */ |
||
600 | if (! debug_record_parameter (dhandle, bfd_asymbol_name (sym), type, |
||
601 | DEBUG_PARM_REG, bfd_asymbol_value (sym))) |
||
602 | return FALSE; |
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603 | break; |
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604 | |||
605 | case C_TPDEF: |
||
606 | type = debug_name_type (dhandle, bfd_asymbol_name (sym), type); |
||
607 | if (type == DEBUG_TYPE_NULL) |
||
608 | return FALSE; |
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609 | break; |
||
610 | |||
611 | case C_STRTAG: |
||
612 | case C_UNTAG: |
||
613 | case C_ENTAG: |
||
614 | { |
||
615 | debug_type *slot; |
||
616 | |||
617 | type = debug_tag_type (dhandle, bfd_asymbol_name (sym), type); |
||
618 | if (type == DEBUG_TYPE_NULL) |
||
619 | return FALSE; |
||
620 | |||
621 | /* Store the named type into the slot, so that references get |
||
622 | the name. */ |
||
623 | slot = coff_get_slot (types, coff_symno); |
||
624 | *slot = type; |
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625 | } |
||
626 | break; |
||
627 | |||
628 | default: |
||
629 | break; |
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630 | } |
||
631 | |||
632 | return TRUE; |
||
633 | } |
||
634 | |||
635 | /* Determine if a symbol has external visibility. */ |
||
636 | |||
637 | static bfd_boolean |
||
638 | external_coff_symbol_p (int sym_class) |
||
639 | { |
||
640 | switch (sym_class) |
||
641 | { |
||
642 | case C_EXT: |
||
643 | case C_WEAKEXT: |
||
644 | return TRUE; |
||
645 | default: |
||
646 | break; |
||
647 | } |
||
648 | return FALSE; |
||
649 | } |
||
650 | |||
651 | /* This is the main routine. It looks through all the symbols and |
||
652 | handles them. */ |
||
653 | |||
654 | bfd_boolean |
||
655 | parse_coff (bfd *abfd, asymbol **syms, long symcount, void *dhandle) |
||
656 | { |
||
657 | struct coff_symbols symbols; |
||
658 | struct coff_types types; |
||
659 | int i; |
||
660 | long next_c_file; |
||
661 | const char *fnname; |
||
662 | int fnclass; |
||
663 | int fntype; |
||
664 | bfd_vma fnend; |
||
665 | alent *linenos; |
||
666 | bfd_boolean within_function; |
||
667 | long this_coff_symno; |
||
668 | |||
669 | symbols.syms = syms; |
||
670 | symbols.symcount = symcount; |
||
671 | symbols.symno = 0; |
||
672 | symbols.coff_symno = 0; |
||
673 | |||
674 | types.slots = NULL; |
||
675 | for (i = 0; i <= T_MAX; i++) |
||
676 | types.basic[i] = DEBUG_TYPE_NULL; |
||
677 | |||
678 | next_c_file = -1; |
||
679 | fnname = NULL; |
||
680 | fnclass = 0; |
||
681 | fntype = 0; |
||
682 | fnend = 0; |
||
683 | linenos = NULL; |
||
684 | within_function = FALSE; |
||
685 | |||
686 | while (symbols.symno < symcount) |
||
687 | { |
||
688 | asymbol *sym; |
||
689 | const char *name; |
||
690 | struct internal_syment syment; |
||
691 | union internal_auxent auxent; |
||
692 | union internal_auxent *paux; |
||
693 | debug_type type; |
||
694 | |||
695 | sym = syms[symbols.symno]; |
||
696 | |||
697 | if (! bfd_coff_get_syment (abfd, sym, &syment)) |
||
698 | { |
||
699 | non_fatal (_("bfd_coff_get_syment failed: %s"), |
||
700 | bfd_errmsg (bfd_get_error ())); |
||
701 | return FALSE; |
||
702 | } |
||
703 | |||
704 | name = bfd_asymbol_name (sym); |
||
705 | |||
706 | this_coff_symno = symbols.coff_symno; |
||
707 | |||
708 | ++symbols.symno; |
||
709 | symbols.coff_symno += 1 + syment.n_numaux; |
||
710 | |||
711 | /* We only worry about the first auxent, because that is the |
||
712 | only one which is relevant for debugging information. */ |
||
713 | if (syment.n_numaux == 0) |
||
714 | paux = NULL; |
||
715 | else |
||
716 | { |
||
717 | if (! bfd_coff_get_auxent (abfd, sym, 0, &auxent)) |
||
718 | { |
||
719 | non_fatal (_("bfd_coff_get_auxent failed: %s"), |
||
720 | bfd_errmsg (bfd_get_error ())); |
||
721 | return FALSE; |
||
722 | } |
||
723 | paux = &auxent; |
||
724 | } |
||
725 | |||
726 | if (this_coff_symno == next_c_file && syment.n_sclass != C_FILE) |
||
727 | { |
||
728 | /* The last C_FILE symbol points to the first external |
||
729 | symbol. */ |
||
730 | if (! debug_set_filename (dhandle, "*globals*")) |
||
731 | return FALSE; |
||
732 | } |
||
733 | |||
734 | switch (syment.n_sclass) |
||
735 | { |
||
736 | case C_EFCN: |
||
737 | case C_EXTDEF: |
||
738 | case C_ULABEL: |
||
739 | case C_USTATIC: |
||
740 | case C_LINE: |
||
741 | case C_ALIAS: |
||
742 | case C_HIDDEN: |
||
743 | /* Just ignore these classes. */ |
||
744 | break; |
||
745 | |||
746 | case C_FILE: |
||
747 | next_c_file = syment.n_value; |
||
748 | if (! debug_set_filename (dhandle, name)) |
||
749 | return FALSE; |
||
750 | break; |
||
751 | |||
752 | case C_STAT: |
||
753 | /* Ignore static symbols with a type of T_NULL. These |
||
754 | represent section entries. */ |
||
755 | if (syment.n_type == T_NULL) |
||
756 | break; |
||
757 | /* Fall through. */ |
||
758 | case C_WEAKEXT: |
||
759 | case C_EXT: |
||
760 | if (ISFCN (syment.n_type)) |
||
761 | { |
||
762 | fnname = name; |
||
763 | fnclass = syment.n_sclass; |
||
764 | fntype = syment.n_type; |
||
765 | if (syment.n_numaux > 0) |
||
766 | fnend = bfd_asymbol_value (sym) + auxent.x_sym.x_misc.x_fsize; |
||
767 | else |
||
768 | fnend = 0; |
||
769 | linenos = BFD_SEND (abfd, _get_lineno, (abfd, sym)); |
||
770 | break; |
||
771 | } |
||
772 | type = parse_coff_type (abfd, &symbols, &types, this_coff_symno, |
||
773 | syment.n_type, paux, TRUE, dhandle); |
||
774 | if (type == DEBUG_TYPE_NULL) |
||
775 | return FALSE; |
||
776 | if (! parse_coff_symbol (abfd, &types, sym, this_coff_symno, &syment, |
||
777 | dhandle, type, within_function)) |
||
778 | return FALSE; |
||
779 | break; |
||
780 | |||
781 | case C_FCN: |
||
782 | if (strcmp (name, ".bf") == 0) |
||
783 | { |
||
784 | if (fnname == NULL) |
||
785 | { |
||
786 | non_fatal (_("%ld: .bf without preceding function"), |
||
787 | this_coff_symno); |
||
788 | return FALSE; |
||
789 | } |
||
790 | |||
791 | type = parse_coff_type (abfd, &symbols, &types, this_coff_symno, |
||
792 | DECREF (fntype), paux, FALSE, dhandle); |
||
793 | if (type == DEBUG_TYPE_NULL) |
||
794 | return FALSE; |
||
795 | |||
796 | if (! debug_record_function (dhandle, fnname, type, |
||
797 | external_coff_symbol_p (fnclass), |
||
798 | bfd_asymbol_value (sym))) |
||
799 | return FALSE; |
||
800 | |||
801 | if (linenos != NULL) |
||
802 | { |
||
803 | int base; |
||
804 | bfd_vma addr; |
||
805 | |||
806 | if (syment.n_numaux == 0) |
||
807 | base = 0; |
||
808 | else |
||
809 | base = auxent.x_sym.x_misc.x_lnsz.x_lnno - 1; |
||
810 | |||
811 | addr = bfd_get_section_vma (abfd, bfd_get_section (sym)); |
||
812 | |||
813 | ++linenos; |
||
814 | |||
815 | while (linenos->line_number != 0) |
||
816 | { |
||
817 | if (! debug_record_line (dhandle, |
||
818 | linenos->line_number + base, |
||
819 | linenos->u.offset + addr)) |
||
820 | return FALSE; |
||
821 | ++linenos; |
||
822 | } |
||
823 | } |
||
824 | |||
825 | fnname = NULL; |
||
826 | linenos = NULL; |
||
827 | fnclass = 0; |
||
828 | fntype = 0; |
||
829 | |||
830 | within_function = TRUE; |
||
831 | } |
||
832 | else if (strcmp (name, ".ef") == 0) |
||
833 | { |
||
834 | if (! within_function) |
||
835 | { |
||
836 | non_fatal (_("%ld: unexpected .ef\n"), this_coff_symno); |
||
837 | return FALSE; |
||
838 | } |
||
839 | |||
840 | if (bfd_asymbol_value (sym) > fnend) |
||
841 | fnend = bfd_asymbol_value (sym); |
||
842 | if (! debug_end_function (dhandle, fnend)) |
||
843 | return FALSE; |
||
844 | |||
845 | fnend = 0; |
||
846 | within_function = FALSE; |
||
847 | } |
||
848 | break; |
||
849 | |||
850 | case C_BLOCK: |
||
851 | if (strcmp (name, ".bb") == 0) |
||
852 | { |
||
853 | if (! debug_start_block (dhandle, bfd_asymbol_value (sym))) |
||
854 | return FALSE; |
||
855 | } |
||
856 | else if (strcmp (name, ".eb") == 0) |
||
857 | { |
||
858 | if (! debug_end_block (dhandle, bfd_asymbol_value (sym))) |
||
859 | return FALSE; |
||
860 | } |
||
861 | break; |
||
862 | |||
863 | default: |
||
864 | type = parse_coff_type (abfd, &symbols, &types, this_coff_symno, |
||
865 | syment.n_type, paux, TRUE, dhandle); |
||
866 | if (type == DEBUG_TYPE_NULL) |
||
867 | return FALSE; |
||
868 | if (! parse_coff_symbol (abfd, &types, sym, this_coff_symno, &syment, |
||
869 | dhandle, type, within_function)) |
||
870 | return FALSE; |
||
871 | break; |
||
872 | } |
||
873 | } |
||
874 | |||
875 | return TRUE; |
||
876 | }>=>>>>>=>=>> |